US Robotics Courier V Everything este un modem extern prin care ne putem conecta la o reţea de tip dial up (prin linia telefonică) sau cu ajutorul căruia primim faxuri.

Detalii:

• Model: US Robotics Courier V Everything.
• Anul fabricaţiei: 1997.
• Rata de transfer la recepţie (download): 56,6 kbps (7 KB/s). X2. (V.90?).
• Rata de transfer la transmisie (upload): 33,1 kbps. V.34.
• EPROM: 256 kb.
• RAM: 32 kb.
• Conexiune: serial (RS232).
• 80-990955-01.
• 21PAZ21PAR0DQ.
• Part #: 1.020.0439-00
• 5 Richview Office Park, Clonskeagh, Dublin 14, Ireland.

Aşa arată de deasupra:

Aşa arată din faţă:

Semnificaţia ledurilor, de la stânga la dreapta, este:

• HS – HIGH SPEED
• AA – AUTO ANSWER / ANSWER
• CD – CARRIER DETECT
• OH – OFF HOOK
• RD – RECEIVE DATA
• SD – SEND DATA
• TR – TERMINAL READY
• MR – MODEM READY/ POWER
• RS – REQUEST TO SEND
• CS – CLEAR TO SEND
• SYN – SYNCHRONOUS MODE
• ARQ / FAX – ERROR CONTROL/ FAX

Aşa arată dedesubt:

Se observă că aici sunt trecute multe informaţii. Le reproduc:

SUMMARY, FREQUENTLY USED COMMANDS

A – Force answer mode.

A/ – repeat last command.

AT – Attention command prefix.

Bn – n=0 ITU-T answer.

n=1 Bell answer.

D – Dial following Dial-string (0-9#*@WPTR,;*!)

DL – Dial last-dialed number.

DSn – Dial number (0 – 9) stored in NVRAM.

En – n=0 Command mode echo OFF.

n=1 Command mode echo ON.

Hn – n=0 Hang up.

n=1 Go off hook.

In – n=3 Show call duration time.

n=4 Show current settings.

n=5 Show NVRAM settings.

n=6 Link diagnostics.

n=7 Product information.

Qn – n=0 Send result codes.

n=1 Supress result codes.

Sr = n – Set ‘r’ register to ‘n.

Sr? = Query register ‘r’.

Sr.b = n – Set register ‘r’ bit ‘.b’ to 1/0.

Xn – n=0 Standard result codes.

n=1 Extended rsult codes.

n=2 – 7 Advanced result codes.

Z – software reset.

+++ – Return to command mode.

> – Repeat until canceled.

$ – Help basic commands.

&$ – Help ampersand commands.

%$ – Help percent commands.

DS – Help Dial commands.

S$ – Help S-registers.

/ – Pause 125 miliseconds.

&An – n=0 Supress/ ARQ result codes.

n=1 Send/ ARQ result codes.

n=2 HST/V.XX result codes.

n=3 Protocol result codes.

&Bn – n=0 Serial port rate varies with link rate.

n=1 Fixed serial port rate.

n=2 Fixed serial port rate in ARQ mode, variable in non-ARQ mode.

&Fn – n=0 Low performance compatibility.

n=1 Hardware flow control.

n=2 Software flow control.

&Hn – n=0 Transmit data flow control disabled.

n=1 Hardware control (CTS).

n=2 Software control (XON/XOFF).

n=3 Hardware and software control.

&In – n=0 Received date software control disabled.

n=1 XON/XOFF, local and remote.

n=2 XON/ XOFF, local only.

n=5 Non-ARQ link control.

&Kn – n=0 Disable data compression.

n=1 Auto enable/ disable.

n=2 Enabled.

n=3 V.42 bits only.

&Mn – n=0 Normal mode, no error control.

n=1,6,7 (Synchronous modes, see manual).

n=4 Normal /ARQ mode.

&Rn – n=0 Enable RTS/ CTS delay.

n=1 Ignore RTS.

n=2 Received data hardware flow control.

&W – Write current settings to NVRAM.

&Zn = s – Write phone number ‘s’ to NVRAM at position ‘n’ (0-9).

&ZC = s – Write the following command string ‘s’ to NVARM.

Setările acestuia, în acest moment, sunt:

• DTR NORMAL.
• VERBAL RESULT CODES.
• DISPLAY RESULT CODES.
• ECHO OFFLINE COMMANDS.
• SUPRESS AUTO ANSWER.
• NORMAL CARRIER DETECT.
• DISPLAY ALL RESULT CODES.
• ENABLE AT COMMAND SET.
• DISCONNECT WITH +++.
• LOAD &F0 SETTINGS.

RS-232 PIN ASSIGNMENTS

1. Ground.
2. Transmitted Data.
3. Received Data.
4. Request to Send.
5. Clear to Send.
6. Data Set Ready.
7. Signal Ground.
8. Carrier Detect.
9. N/A.
10. N/A.
11. N/A.
12. Speed Indicate.
13. N/A.
14. N/A.
15. Sync TX Timing.
16. N/A.
17. Sync RX Timing.
18. N/A.
19. N/A.
20. Data Terminal Ready.
21. N/A.
22. Ring Indicate.
23. Sync TX Timing.

Aşa arată din spate:

Ordinea, de la stânga la dreapta este:

• Pornire (Power On/ Off).
• Alimentare (Power).
• Ieşire telefon (Phone)
• Intrare semnal (Line)
• Serial (RS-232) 25 de pini.

Ca şi dimenisune pot să spun că este destul de mare. Pentru comparaţie am folosit un hard disk Western Digital Caviar WD400 de 3,5 inci. Iată::

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Ca şi curiozitate acest modem este încă funcţional (doar e făcut în Irlanda) şi este cel mai complex modem pe care l-am întâlnit vreodată. Fiindcă este atât de inteigent pe vremea lui cel mai bine mergea internetul pe astfel de modemuri care suportă Hardware Flow Control. De obicei astfel de modemuri se conectau şi rămâneau conectate la viteza maximă, ceea ce este totuşi o performanţă.

Pe stoc: 1.